Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
thuat cao » thuat co, thuat bao, thuat cam
tung cam » dung cam, trung cap, tung pham
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
thai cao » tai cao, thoai cac, toan cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu tach - thanh tung cam nang ((cong tan) or (cong tac)) ((thai cao) OR (thuat cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - thanh tung cam nang ((cong tan) OR (cong tac)) ((thai cao) OR (thuat cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tach - thanh tung cam nang ((cong tan) or (cong tac)) ((thai cao) OR (thuat cao))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - thanh tung cam nang ((cong tan) or (cong tac)) ((thai cao) OR (thuat cao))*.